Bobbin-holder device for stationary magazines



Sept. 30 1924.

A. COMPAGNA BOBBIN HOLDING DEVICE FOR STATIONARY MAGAZINES Filed Nov. 151923 ALE A/WIPE Patented Sept 30, 1924a UNITED STATES PATENT OFFICE.

ALEXANDRE COMPAGNA, 0F BIDDEFORD, MAINE, ASSIGNOR TO GROMPTON & KNOWIJESLOOM WORKS, 0F WORCESTER, MAE'L EJQ GIIUSETTfE, A CORPORATION OFMASSACHUSETTS.

BOBBIN-HOLDER DEVICE FOR STATIONARY MAGAZINES.

Application filed November 15, 1923.

T 0 all whom it may concern Be it known that I, ALEXANDRE COMPAG- NA, a.citizen of the United States, residing at Biddeford, in the county ofYork and State of Maine, have invented new and useful Bobbin-HoldingDevices for Stationary Magazines, of which the following is aspecification.

This invention relates to automatic looms I of the weft replenishingtype in which a stationary weft carrier magazine is provided, having aplurality of separate bobbin or weft carrier compartments. In suchlooms, a certain kind or color of weft may be infrequently used, so thatcertain weft carriers may remain in the magazine for a long period oftime. It has been found that the jar and vibration of the loom tends toproduce slight'angular movements of the weft carriers which in time mayentangle the weft ends and cause breakage thereof upon transfer.

Devices and arrangements for preventing such angular movements have beenheretofore proposed, but it is the object of my invention to improve theconstruction and operation of such devices so that advantageous resultstherefrom may be more effectively attained.

' With this general. object in view, one feature of my invention relatesto the provision of weft carrier or bobbin holding devices of simple,substantial, and durable construction, each device preferably beingformed from a single metal rod and extending vertically adjacent thebobbins in a particular magazine compartment. Provision is made forpressing these holding devices yielding ly against the sides of thebobbins or against the yarn thereon, thus restraining angular movementthereof.

Another feature of my invention relates to the release or withdrawal ofthe holding devices to permit free downward movement of the weftcarriers upon indication of weft exhaustion and particularly to suchrelease of the holding devices by the weft carrier supports or cradlesby which the bobbins are retained in the magazine compart ments.

A preferred form of my invention is shown in the drawings in whichsurrounds the part 18 of each holding device Serial No. 675,002.

Fig. 1 is a sectional side elevation of por 'tions of a stationary weftcarrier magazme embodying my improvements;

Fig. 2 is a plan view of the parts shown in Fig. 1; and i Fig. 3'is adetail sectional view, taken along the line 3-3 in Fig. 1.

Referring to the drawings, I have shown portions of a loom magazinecomprising a magazine frame 10 forming one end of the magazine andprovided with flanges 11 and ribs 12 by which the magazine is dividedinto a series of separate vertical compartments 13. The frame 10 isconnected to a second frame member (not shown). by cross bars 14. Thissecond frame member is similarly divided into vertical compartments; andis adapted to receive the tips of thebobbins in the usual. manner.

The lowermost bobbin or weft carrier B in each compartment is retainedin the com partment by a weft carrier support or cradle 15, pivoted at16 (Fig. 3) on the magazine 7 frame 10. This cradle 15 is provided withan enlarged supporting surface 16 which is concave on its inner face andconvex outwardly and is adapted to receive and support the lowest bobbinwhen. it is advanced to intermediate position upon indication of weftexhaust-ion. Suitable actuating mechanism not shown) is provided forrocking the cradles 15 to releasethe bobbins.

The parts thus far described are of the usual type and form no part ofmy present invention which relates particularly to the provision ofbobbin holding devices 17 preferably each formed from a single piece ofwire rod bent to an irregular U-shape. The short offset upper leg 18 ofeach holding device 17 is pivotally mounted in a bearing or bracket 19supported in fixed position by the magazine frame 10. A coil spring 2017 and is secured at its lower end to the bracket 19 and at its upperend to a collar 21 adjustable on the part 18.

The spring 20 is so disposed that any desired tension may be applied tothe holding device to press the long straight vertical leg of theholding device against the sides of the bobbins B or of the yarn Ythereon. At its extreme lower end,. each holding device 17 is providedwith an offset projecting portion 24 positioned adjacent the enlargedportion16 of itsassociated cradle 15.

When the cradles are in the normal position shown in full lines in Fig.1, the bobbins or weft carriers are supported thereby and the holdingdevices 17 are moved yieldingly against the bobbins or the yarn thereonby the springs 20. If, however, one of the cradles is swung to theposition indicated in dotted lines in Fig. 1, the portion 16 of thecradle engages the portion 24 of the holding device, pushing the holdingdevice outward to the position shown in dotted lines in Fig. 1 and thusreleasing lateral pressure upon the bobbins at the same time thatdownward feeding movement thereof is desired. As soon as the cradles arereturned to normal position after the delivery of a bobbin, the holdingdevices are released for engagement with the remaining bobbins.

While I prefer to construct the bobbin holding devices for release bythe cradles as above described, certain of the advantages of the holdingdevices may be independent- 1 utilized. Accordingly, I have indicatedthe holding devices 17 a for two of the compartments as having the lowerends shortened and the offset projecting portions omit-ted. Theseholding devices 17 remain continuously in engagement with the bobbins inthe magazine. 7

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed otherwise than as setforth in the claims, but what I claim is 1.' In a loom, a weft carriermagazine having a plurality of weft carrier compartments, holdingdevices extending alongside said compartments and adjacent the weftcarriers, and movably mounted members for supporting and releasing saidweft carriers, said members directly engaging said hold-- ing devicesand each member moving its as sociated holding device'to inoperativeposition when releasing a. weft carrier from its magazine compartment.

2. In a loom, a weft carrier magazine having a plurality of weft carriercompartments, holding devices extending alongside said compartments andadjacent the weft carriers, and movably mounted members for supportingand releasing said weft carriers, each holding device having a portionthereof extending adjacent its associated supporting member and engagedthereby for movement to inoperative position upon weft carrier releaseby said member.

3. In a loom, a weft carrier magazine having a plurality of weft carriercompartments, holding devices extending alongside said compartments andadjacent the weft carriers, and movably mounted members for supportingand releasing said weft carriers, each supporting member having acontact portion and each holding device having a portion extendingadjacent thereto, whereby said holding device may be moved toinoperative position upon release of a weft carrier by its associatedsupporting member.

4. In a loom, a weft carrier magazine having a plurality of weft carriercompartments, holding devices extending alongside said compartments andadjacent the weft carriers, each holdin device being formed from asingle piece 0 metal rod bent to substantially U-shape with one portionthereof pivoted on said magazine, and means to yieldingly press saidholding device against the weft carriers in a magazine compartment.

5. A weft carrier holding device comprising a single metal rod bent tosubstantially U-shape, with its short upper leg forming a pivotalbearing for said device and with its lower end offset for engagement bya releasing device.

In testimony whereof I have hereunto atfixed my signature.

ALEXANDRE COMPAGNA.

